G-CoCr28 Cobalt vs. EN 1.4594 Stainless Steel
G-CoCr28 cobalt belongs to the cobalt alloys classification, while EN 1.4594 stainless steel belongs to the iron alloys. They have a modest 35% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is G-CoCr28 cobalt and the bottom bar is EN 1.4594 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 200 |
| Elongation at Break, % | 6.7 | |
| 11 to 17 |
| Fatigue Strength, MPa | 130 | |
| 490 to 620 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 83 | |
| 76 |
| Tensile Strength: Ultimate (UTS), MPa | 560 | |
| 1020 to 1170 |
| Tensile Strength: Yield (Proof), MPa | 260 | |
| 810 to 1140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 1200 | |
| 820 |
| Melting Completion (Liquidus), °C | 1330 | |
| 1450 |
| Melting Onset (Solidus), °C | 1270 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 8.5 | |
| 16 |
| Thermal Expansion, µm/m-K | 14 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 100 | |
| 15 |
| Density, g/cm3 | 8.1 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 6.2 | |
| 3.2 |
| Embodied Energy, MJ/kg | 84 | |
| 45 |
| Embodied Water, L/kg | 440 | |
| 130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 31 | |
| 110 to 190 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 160 | |
| 1660 to 3320 |
| Stiffness to Weight: Axial, points | 15 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 19 | |
| 36 to 41 |
| Strength to Weight: Bending, points | 19 | |
| 29 to 31 |
| Thermal Diffusivity, mm2/s | 2.2 | |
| 4.4 |
| Thermal Shock Resistance, points | 14 | |
| 34 to 39 |
Alloy Composition
| Carbon (C), % | 0.050 to 0.25 | |
| 0 to 0.070 |
| Chromium (Cr), % | 27 to 30 | |
| 13 to 15 |
| Cobalt (Co), % | 48 to 52 | |
| 0 |
| Copper (Cu), % | 0 | |
| 1.2 to 2.0 |
| Iron (Fe), % | 9.7 to 24.5 | |
| 72.6 to 79.5 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 1.2 to 2.0 |
| Nickel (Ni), % | 0 to 4.0 | |
| 5.0 to 6.0 |
| Niobium (Nb), % | 0 to 0.5 | |
| 0.15 to 0.6 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.5 to 1.5 | |
| 0 to 0.7 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |